Composio
Gives AI agents access to 250+ external tools (GitHub, Slack, Gmail, databases) with managed OAuth. Handles the auth and API complexity so your agent doesn't have to.
Composio solves the hardest part of building useful agents - connecting to external services. It provides pre-built integrations with 250+ tools: GitHub (create PRs, manage issues), Slack (send messages, read channels), Gmail, Google Calendar, Notion, databases, and more. The key value is managed authentication - it handles OAuth flows, token refresh, and permission scoping. Your agent describes what it wants to do, and Composio translates that into the right API calls. Works with the Vercel AI SDK, LangChain, and as MCP servers.
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Get started with Composio
Gives AI agents access to 250+ external tools (GitHub, Slack, Gmail, databases) with managed OAuth. Handles the auth and API complexity so your agent doesn't have to.
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Vercel AI SDK
The TypeScript toolkit for building AI apps. Unified API across OpenAI, Anthropic, Google. Streaming, tool calling, structured output, multi-step agents. 50K+ GitHub stars.
Claude Agent SDK
Anthropic's Python SDK for building production agent systems. Tool use, guardrails, agent handoffs, and orchestration. Released alongside Claude 4.
LangChain / LangGraph
Most popular LLM framework. 100K+ GitHub stars. Chains, RAG, vector stores, tool use. LangGraph adds stateful multi-agent workflows with cycles and persistence.
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